Home / 5,157.38-7,117.31-2,799.52

Finding the Fourth Proportional to 5,157.38, 7,117.31 and 2,799.52

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Solution

The fourth proportional to 5,157.38, 7,117.31 and 2,799.52 is: 3,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.38 : 7,117.31 = 2,799.52 : x
  2. Step 2: Convert to fraction form
    5,157.38/7,117.31 = 2,799.52/x
  3. Step 3: Cross multiply
    5,157.38x = 7,117.31 × 2,799.52
  4. Step 4: Simplify right side
    5,157.38x = 19,925,040.90
  5. Step 5: Solve for x
    x = 19,925,040.90/5,157.38
  6. Step 6: Final answer
    x = 3,863.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.